Added timeline filters

[KarlXerri]

I've added the base functionality in PyWB to control the different permutations of toggles:

a single digit end_timestamp controls the timeline filters

• - show one capture per day, and hide redirects
• 1 - show one capture per day, and show redirects
• 2 - show all captures, and hide redirects
• 3 - show all captures, and show redirects

These utilise the current end_timestamp regex parameter of WbUrl's QUERY_REGEX: QUERY_REGEX = re.compile('^(?:([\w-:]+)/)?(\d)(timeline|[-])(\d*)/?(.+)$')

This means that URLs with the various filters applied will have a single digit numeric suffix to "timeline", such as:

http://0.0.0.0:8080/ukgwa/timeline/www.gov.uk http://0.0.0.0:8080/ukgwa/timeline1/www.gov.uk http://0.0.0.0:8080/ukgwa/timeline2/www.gov.uk http://0.0.0.0:8080/ukgwa/timeline3/www.gov.uk

Description

Motivation and Context

Screenshots (if appropriate):

Types of changes

• [ ] Replay fix (fixes a replay specific issue)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have added or updated tests to cover my changes.
• [ ] All new and existing tests passed.